You can have more space storages your movie, the game, music.
Photofast Dual MicroSD TF to MS Pro Duo Adapter CR-5400 Description:

• For use with TF card/microSD/microSDHC
• Support card types: MicroSD 256MB - 2GB/ MicroSDHC 4GB -16GB
• System requirements: Works on all OS(PSP/Windows/Mac)
• Holds 2 cards for super large capacity Get maximum storage capacity with 2 microSDHC or 2 microSD cards. CR-5400 converts 2 microSD(HC) cards into one MS Pro Duo stick. You can get twice the capacity at a lower price.
• Card types can be mixed Cards of different capacity and different type can be used concurrently (i.e. microSD+microSDHC).
• Freedom of expansion and upgrade The adapter works with only one microSDHC card as well. The second slot can be equipped anytime later. You can exchange the cards and upgrade the max. capacity at will!
• Super high read/write speeds of 10MB/s and up CR-5400 is made of high quality components and preserves the original speed of the inserted microsd(HC) cards(when two different types of microSD(HC) cards are used, the slower card sets the speed rate) If only 1 microSD(HC) cards is used, it must be inserted into slot#1 in order to work When using new microSD(HC) cads, you need to format with a SONY product before you can store data. In order to copy or delete data directly, insert CR-5400 in your card reader. Don't take out the microSD(HC) cards and perform write operations on the single card. Your data will be corrupt.
  the cards and psp in the pictures for reference only,not included.
  Note 1: Data Transfer can only be done with micro SDHC cards inserted in CR-5400. Direct PC to micro SDHC card data transfer and then inserting in CR-5400 won't work.
  Note 2: Re-using your micro SDHC cards for other devices than CR-5400: Should you experience formatting problems(i.e. only half of the original capacity available), please format concerned micro SDHC card(s) in slot#1 of CR-5400 (slot#2 must be empty). Do this for every affected card. Now you can re-use your micro SDHC card(s) in other devices.